Wealthy businessman Victor Shaw, who asked Tracy Steele for protection, is found murdered. Tracy's reporter friend, Jerry Jackson, had a notebook full of damaging information about Shaw, but the notebook was stolen shortly before the murder, causing concern for all involved.

A movie star accidentally kills a man in a hit-and-run and flees the scene of the crime, but not before the assistant director of the movie company spots sees her doing so, resulting in a blackmailing scheme that Tracy eventually exposes.

A hotel violinst asks Tracy and Tom to guard his valuable instrument. But the fiddler himself needs guarding because his ex-wife and the former boyfriend of his current wife are out to murder him. They startle him into a heart attack, then remove his medication. When Steele manages to get him to the hospital in time to save his life, the killers make a second attempt on his life.

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Following the trail of missing money puts Tom in the path of four killers.

Tracy attempts to clear an army lieutenant who won't try to defend himself against robbery charges.

Ginger Martin hires Tom to find her husband Johnny, who has been missing for two years. Tom locates Johnny, captaining a yacht for and having a forced affair with wealthy Verna Collins. When Verna is murdered, Johnny is accused and sent to jail. Tom works to uncover the real murderer.

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While on vacation in Hawaii, Mavis Purcell is nearly killed in two suspicious accidents and suspects her artist husband is behind them, so she asks Tracy Steele to protect her.

When a lovely guest named Marian Summers checks in at the Hawaiian Village Hotel, she attracts the attention of Tom Lopaka, and coincidentally a string of burglaries plague the hotel. Marian is the girlfriend of a gangster facing a grand jury in Chicago and has been sent to Hawaii to keep her from testifying. The gangsters have also sent a hit man to make sure she never speaks again.

Tracy is hired by a ranch owner to investigate the loss of several shipments of cattle.

Two young Japanese visitors, Hiroshi and Susumu, ask Tom to locate an old man named Noburu. Tom finds him but is reluctant to tell his clients until he knows the reasons for their search. Tom finds out that that the young Japanese men plan to kill Noburu in order to avenge their family's honor.

Returning from Hong Kong, Tracy's plane is hijacked.

Barbara Ingalls is accused of murder when her husband's mistress is found murdered. MacKenzie is asked to investigate the crime, but he discovers his life is also in danger because someone doesn't want him to arrive at a different conclusion.

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Tom listens in on Kim's taxi radio and gets an alarming earful. Kim and his passanger, a girl named Joan Carmichael, are being forced at gunpoint to take a ride. Tom uncovers a murder while attempting to locate Kim and his passenger.

Private eyes Steele and Lopaka are hired by a slick real estate operator to locate a missing man, a released felon whom he needs to complete the deal in a land swindle.

Peter, a beach boy, claims to be the son of wealthy Donna Lane and is arrested when he trespasses on her property. Donna claims her son died in a drowning accident nine years earlier while swimming with his stepfather Carleton. Steele decides to help the boy and prove he is Donna's son and also find out what really happened nine years ago.

Lopaka is hired to help a woman sneak an art object into Macao by impersonating her husband, not knowing that she murdered her husband and has the same plans for him.

From the mainland, investigator Stu Bailey calls on Steele and Lopaka to track down an embezzler who's gone to Hawaii. The trail leads them to a travel bureau which turns out to be a front for illicit activities in which pretty native girls are used in a scheme to defraud and kill wealthy vacationers.

When an expensive diamond in their care is stolen, Tracy and Tom suspect a security leak inside their offices.